I was trying to create the idea of becoming lost in memories with that line, so I don't think "mask" would work. I was just worried that the words "in it" sounded strange together, but I think ~tattoofuzzy's idea of adding a comma helped with the flow.

Great poem and the imagery is really good! When i read "in it I do bask" the first time it tripped me up a little, but going over it a couple times it seems to work. The word choice is great maybe just add a comma so "In it, I do bask". Only a suggestion though. I really enjoyed reading this

This is a really wonderful poem. Love the rhyme scheme!"In it do I bask" ...I think I can see why you might not be happy with that line. I second almond9's suggestion of "Within it I bask"; it would help the flow